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Week 4 Notes

by: Brogxd

Week 4 Notes GEOL 103 001

Environment of the Earth

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About this Document

Class notes for week 4 and in preparation for Quiz.
Environment of the Earth
Class Notes
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This 1 page Class Notes was uploaded by Brogxd on Wednesday September 16, 2015. The Class Notes belongs to GEOL 103 001 at Northern Illinois University taught by in Fall 2015. Since its upload, it has received 29 views. For similar materials see Environment of the Earth in Geology at Northern Illinois University.


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Date Created: 09/16/15
Planetarv Motion Archaeo astronomy Study of astronomy of ancient peoples Religious Significance Ancient Greeks used logic and reason to try and understand the universe 0 Pythagoras nature is understandable through mathematics 0 Plato perfection of the heavens The planets are spheres and the orbits are in perfect circles Aristotle applied Plato s ideas to the universe The Earth is imperfect and changing while the Heavens are perfect and unchanging Geocentric Model of the Solar System Everything centered around the Earth Ptolemy Refined Geocentric model with epicycles Evathosthenes computed circumference of the Earth 0 Galileo motion of falling objects They do not fall at a constant speed but they accelerate Gravitational Acceleration g 98mss or g 98mssquared2rld equation only applies to Earth Heavy and light objects accelerate the same Isaac Newton Refined Galileo s work and established mathematical basis 1 3 Laws of Motion 2 Universal Law of Gravitation Law 1 A body remains at rest or in straight line motion unless acted on by a force Law 2 F ma F Force M Mass A Acceleration Mass does not equal weight but weight does equal force Law 3 Every action force has an opposite and equal reaction Momentum MassVelocity


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